Vending machine



FIG. 1 is a front view of a vending machine showing my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

All broken line portions of the figure drawings are included to show portions of the article that form no part of the claimed design. 

CLAIM The ornamental design for a vending machine, as shown and described. 